Mat



FIG. 1 is a front perspective view of a mat, according to the new design.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a right side view thereof.

FIG. 5 is a left side view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The features shown in broken lines are environment only, and not part of the claimed design. 

CLAIM The ornamental design for a mat, as shown and described. 